CN110261269A - Measuring device for thermal radiation property between fine solid particle or drop - Google Patents
Measuring device for thermal radiation property between fine solid particle or drop Download PDFInfo
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- CN110261269A CN110261269A CN201910553111.8A CN201910553111A CN110261269A CN 110261269 A CN110261269 A CN 110261269A CN 201910553111 A CN201910553111 A CN 201910553111A CN 110261269 A CN110261269 A CN 110261269A
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- 239000007787 solid Substances 0.000 title claims abstract description 51
- 230000005855 radiation Effects 0.000 title claims abstract description 32
- 238000002955 isolation Methods 0.000 claims abstract description 33
- 238000002604 ultrasonography Methods 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000010792 warming Methods 0.000 claims abstract description 3
- 239000011521 glass Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000013508 migration Methods 0.000 abstract description 4
- 230000005012 migration Effects 0.000 abstract description 4
- 238000011160 research Methods 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 4
- 239000000725 suspension Substances 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 17
- 238000005259 measurement Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
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- 239000011261 inert gas Substances 0.000 description 2
- 238000005339 levitation Methods 0.000 description 2
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- 229910052709 silver Inorganic materials 0.000 description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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- Health & Medical Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Radiation Pyrometers (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a kind of measuring devices for thermal radiation property between fine solid particle or drop, including ultrasound suspending module, external heating module, temperature diagnostic module, atmosphere adjustment module and control module.The ultrasound suspending module includes ultrasound suspending device, covers at the isolation cover of periphery and the thermally conductive sphere as high temperature heat source.The external heating module includes the CO that thermally conductive sphere can be made to be warming up to specific temperature through the non-contact heating method of the isolation cover2Laser.The present invention can effectively avoid suspension bring Heat Migration, facilitates and is tested solid particle or the heated influence to react to thermal radiation property of drop under research different atmosphere；It can ensure that the quick response and stabilization of radiant heat source temperature；Great convenience is provided for experimental implementation.
Description
Technical field
The present invention relates to heat radiations between the measuring device of thermal radiation property more particularly to a kind of fine solid particle or drop
The measuring device of characteristic.
Background technique
Thermal radiation property between solid particle or drop is thermophysical property important in its engineer application, is related to heat transfer and passes
Multiple field of engineering technology such as matter, burning, material preparation, energy storage.Heat radiation is object due to the radiated electromagnetic wave with temperature
The phenomenon that, it is one of three kinds of modes of heat transfer.General heat radiation is propagated mainly by longer wavelengths of visible light and infrared ray.Gu
Thermal radiation property between body particle or drop depends on the collective effect of the parameters such as temperature, surface area, radiance, distance.On and
It states parameter again and will receive solid particle or drop and the factors such as chemical reaction or phase transformation and ambient gas flowing occur at high temperature
Influence.Therefore, research is unfolded to the thermal radiation property of different solid particles or drop at different conditions, exploring improves its heat
The technology and methods of radiation characteristic, to its thermophysical property is optimized, solving correlation engineering field key technical problem has important valence
Value.
It for large-sized solid particle or drop, generallys use suspension method and it is fixed, then carry out heat radiation spy
Property measurement.But for micron to millimetre-sized fine solid particle or drop, Heat Migration caused by hanging will cause measurement knot
The significant deviation of fruit.The interference that therefore, it is necessary to try to exclude to be tested solid particle or drop and external contact.In addition, to guarantee
The accuracy of measurement result, it is also necessary to provide to be tested solid particle or drop to temperature requirement quick response, good stability
High temperature heat source, and using accurate, reliable temperature diagnostic equipment to high temperature heat source temperature and tested solid particle or droplet surface
Temperature Distribution be monitored.The measuring device of thermal radiation property is difficult to meet above-mentioned need between existing solid particle or drop
It asks, it is necessary to develop new measuring device and method.
Summary of the invention
Goal of the invention: the present invention provides a kind of measurement dresses for thermal radiation property between fine solid particle or drop
The problem of setting, causing Heat Migration to cause measurement result significant deviation which solves suspension；Meanwhile solving high temperature heat source
The problem of to temperature requirement low-response, stability difference and temperature monitoring inaccuracy, poor reliability.
Technical solution: the measuring device for thermal radiation property between fine solid particle or drop of the invention, including it is super
Acoustic levitation module, external heating module and temperature diagnostic module.
The ultrasound suspending module includes ultrasound suspending device, covers at the isolation cover of periphery and leading as high temperature heat source
Hot-bulb body.
The ultrasound suspending device includes longitudinal loudspeaker array for emitting supersonic frequency sound wave from top to bottom and the loudspeaking
The Reflector Panel that device array is oppositely arranged, and it is zero that no less than 3 acoustic pressures can be formed between loudspeaker array and Reflector Panel
Acoustic pressure node, and thermally conductive sphere and tested solid particle or droplets stable can be made to suspend.
The external heating module includes that thermally conductive sphere can be made to heat up through the non-contact heating method of the isolation cover
To the CO of specific temperature2Laser.
The temperature diagnostic module includes that can measure the Two-color Measure Thermometer of the thermally conductive sphere temperature and for simultaneously
Measure the thermal infrared imager of tested solid particle or droplet surface two-dimensional temperature situation.
To realize to the accurate, reliable of the Temperature Distribution of high temperature heat source temperature and tested fine solid particle or droplet surface
The thermometric range of monitoring, the Two-color Measure Thermometer and thermal infrared imager is not less than CO2(2000 DEG C of the heating upper limit of laser
Left and right), wherein the measurement radiance of Two-color Measure Thermometer is set as the emissivity of thermally conductive sphere, the measurement spoke of thermal infrared imager
The rate of penetrating is set as the emissivity of tested solid particle or drop.
The measuring device further includes atmosphere adjustment module, and the atmosphere adjustment module includes for adjusting the isolation cover
The gas cylinder of interior atmosphere, the gas cylinder inside gas piping and isolation cover by being connected to, and the gas cylinder includes inert gas gas cylinder
With oxidizing gas gas cylinder.
The measuring device further includes control module, the control module include for data acquisition data collecting card and
For the setting of each module parameter and the computer of start-up and shut-down control.The temperature diagnostic module is collected and recorded by data collecting card
The measurement data of acquisition carries out the ultrasound suspending device, data collecting card and temperature diagnostic module by personal computer and respectively sets
Standby operating parameter setting and start-up and shut-down control.
For convenience of switching and controlling ambiance locating for tested fine solid particle or drop, the isolation cover is by glass
Material is made, and covers at the whole body outside the ultrasound suspending device by sealing buckle and keep its closed, and not shadow in disassembly process
Ring the normal operation of the ultrasound suspending device.
Admission line and outlet pipe are equipped at the top of the isolation cover, atmosphere in ultrasound suspending module can be switched over
It maintains.
The isolation cover leans to one side to be equipped with germanite glass form, has to the thermal infrared imager thermometric wavelength (7.5-14.0 μm)
Good transmitance.
For guarantee tested fine solid particle or drop can stable suspersion, the sound wave tranmitting frequency of the loudspeaker array
It is continuously adjusted within the scope of 0-100kHz.
Influence for convenience of the different size high temperature heat sources of research to tested fine solid particle or drop thermal radiation property, institute
The diameter for stating thermally conductive sphere can be 1.5 μm of -2.5mm.
According to test needs, it is tested fine solid particle or liquid-drop diameter range can be 1.5 μm of -2.5mm.
For the accuracy for guaranteeing experimental result, the thermally conductive sphere is made of the good conductor material of heat.Such as gold, silver, copper, aluminium
Deng.When sphere local heating, heat can quickly conduct in sphere, make the ball interior temperature difference during test that can be ignored.
The CO2The power of laser and light-emitting window direction are adjustable, to realize the quick heating to thermally conductive sphere, the CO2
Laser power is continuously adjusted within the scope of 0-400W, and the angle of light-emitting window and horizontal plane is continuously adjusted within the scope of 0-90 °, hair
The optical maser wavelength penetrated is less than 200nm, and can pass through isolation cover glass.
The gas cylinder is additionally provided with flow control valve, and gaseous species can be switched by the flow control valve and adjust flow,
Realize that the atmosphere in the isolation cover is adjusted.
The utility model has the advantages that the 1, present invention carries out thermally conductive sphere and tested fine solid particle or drop using ultrasound suspending device
It is fixed, it can effectively avoid suspension bring Heat Migration, while facilitating control and adjusting thermally conductive sphere and the tested fine solid of female
Relative position between particle or drop；2, proving ring of the present invention using isolation cover as tested fine solid particle or drop
Border facilitates and is tested solid particle under research different atmosphere or drop is heated occurs, it can be achieved that switching and maintenance to ambiance
React the influence to thermal radiation property；3, the present invention uses thermally conductive sphere as high temperature heat source, and uses CO2Laser is to thermally conductive
Sphere is heated, it can be ensured that the quick response and stabilization of radiant heat source temperature；4, the present invention is using Two-color Measure Thermometer to thermally conductive
The temperature of sphere carries out real-time monitoring, can it is accurate, be quickly obtained thermally conductive sphere temperature change and adjust CO on this basis2Laser
Device power；5, the present invention using thermal infrared imager to the two-dimension temperature distribution situation of tested fine solid particle or droplet surface,
Can it is accurate, be quickly obtained two-dimension temperature changes in distribution caused by tested fine solid particle or drop thermal radiation；6, of the invention
The operating parameter setting of ultrasound suspending device, data collecting card and each equipment of temperature diagnostic module is carried out using personal computer and is opened
Stop controlling, provides great convenience for experimental implementation.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of ultrasound suspending device in the present invention.
Specific embodiment
Referring to Fig. 1 and Fig. 2, for thermal radiation property between fine solid particle or drop described in one embodiment of the invention
Measuring device, the device are capable of measuring the thermal radiation property under different atmosphere and heat source temperature between fine solid particle or drop 4, by
Ultrasound suspending module, external heating module, temperature diagnostic module, atmosphere adjustment module and control module composition.
Ultrasound suspending module includes ultrasound suspending device 9, isolation cover 8 and the thermally conductive sphere 5 as high temperature heat source.It is described super
9 main body of acoustic levitation device is by emitting the loudspeaker array 1 of supersonic frequency sound wave from top to bottom and being located at immediately below loudspeaker array 1
Reflector Panel 7 forms, and the two relative position is fixed, and no less than 3 acoustic pressures can be formed between loudspeaker array 1 and Reflector Panel 7
The acoustic pressure node for being zero makes thermally conductive sphere 5 and tested solid particle or 4 stable suspersion of drop.The isolation cover 8 uses glass material
Material is made, and can be anchored on 9 whole body of ultrasound suspending device by sealing buckle and keep its closed, air inlet is equipped at the top of isolation cover 8
Pipeline 3 and outlet pipe 2 can be switched over and be maintained to atmosphere in isolation cover 8, and isolation cover 8 leans to one side to be provided with germanite glass form 6,
There is good transmitance to (7.5-14.0 μm) of thermal infrared imager thermometric wavelength.The thermally conductive sphere 5 uses hot good conductor
(such as gold, silver, copper, aluminium) is made, and when sphere local heating, heat can quickly conduct in sphere, makes ball during test
Body internal difference in temperature can be ignored.
The external heating module includes a power, the adjustable CO in light-emitting window direction2Laser 15, can be by non-contact
Formula heating method makes the thermally conductive sphere 5 of stable suspersion be warming up to specific temperature.
The temperature diagnostic module includes a Two-color Measure Thermometer 16 and a thermal infrared imager 10, wherein Two-color Measure Thermometer
16 for measuring the surface temperature of the thermally conductive sphere 5, and thermal infrared imager 10 is used for while measuring tested solid particle or drop 4
The two-dimensional temperature situation on surface.
The atmosphere adjustment module includes gas cylinder 12 and flow control valve 11, and is connect by gas piping with isolation cover 8,
The gas cylinder 12 includes one group of inert gas gas cylinder and one group of oxidizing gas gas cylinder, be can be switched by the flow control valve 11
Gaseous species and adjusting flow realize that the atmosphere in the isolation cover 8 is adjusted.
The control module includes one piece of data collecting card 14 and a personal computer 13, is adopted by data collecting card 14
Collect and record the measurement data that the temperature diagnostic module obtains, the ultrasound suspending device 9, number are carried out by personal computer 13
According to the setting of the operating parameter of capture card 14 and each equipment of temperature diagnostic module and start-up and shut-down control.
The operation principle of the present invention is that:
The loudspeaker array 1 in ultrasound suspending device 9 is opened when test in advance, after ultrasonic frequency is stablized, by thermally conductive ball
Body 5 is placed into the acoustic pressure near nodal in ultrasound suspending device 9, makes thermally conductive 5 stable suspersion of sphere.
By in the installation to ultrasound suspending device 9 of isolation cover 8, gas cylinder 12 and flow control valve 11 are opened, and will be on isolation cover 8
Aperture needed for admission line 3 and outlet pipe 2 are adjusted to test.
Two-color Measure Thermometer 16 is opened, thermally conductive sphere 5 is directed at and carries out thermometric, and open CO2Laser 15 adjusts light-emitting window angle
Degree and power, make laser irradiation on thermally conductive 5 surface of sphere, and heating temperature reaches test desirable value.
Close CO2Laser 15 and flow control valve 11, and isolation cover 8 is removed, continue to use the monitoring of Two-color Measure Thermometer 16
The temperature of thermally conductive sphere 5, until the temperature of thermally conductive sphere 5 is down to room temperature.
Tested fine solid particle or drop 4 are placed into the acoustic pressure node for being different from thermally conductive sphere 5 in ultrasound suspending device 9
Near, make 4 stable suspersion of fine solid particle or drop, reinstalls isolation cover 8, and turn-on flow rate regulating valve 110.
CO is opened simultaneously2Laser 15 and thermal infrared imager 10, light transmission germanite glass form 6 is to fine solid particle or drop
4 temperature change under thermally conductive 5 heat radiation of sphere effect is monitored.
It is acquired and stores using data collecting card 14 and 13 pairs of the personal computer measurement data obtained.
CO is successively closed after completing test2Laser 15, gas cylinder 12, flow control valve 11 and thermal infrared imager 10 are removed
Isolation cover 8 simultaneously closes the admission line 3 on isolation cover 8 and outlet pipe 2, recycles after thermally conductive sphere 5 is cooled to room temperature thermally conductive
Sphere 5 simultaneously closes Two-color Measure Thermometer 16, needs to collect remaining tested fine solid particle or drop 4 according to test, then
Mute speaker array 1 terminates ultrasonic wave transmitting.
Operator should carry out corresponding security protection during test, including high temperature protection, lasing safety, ultrasonic wave are anti-
Shield, the contact of fine solid particle and drop and sucking protection etc..
Claims (10)
1. a kind of measuring device for thermal radiation property between fine solid particle or drop, it is characterised in that: outstanding including ultrasound
Floating module, external heating module and temperature diagnostic module,
The ultrasound suspending module includes ultrasound suspending device, covers at the isolation cover of periphery and as the thermally conductive of high temperature heat source
Sphere,
The ultrasound suspending device includes the loudspeaker array of longitudinal transmitting supersonic frequency sound wave, opposite with the loudspeaker array sets
The Reflector Panel set, and the acoustic pressure node that no less than 3 acoustic pressures are zero can be formed between loudspeaker array and Reflector Panel, and
Thermally conductive sphere and tested solid particle or droplets stable can be made to suspend；
The external heating module includes that thermally conductive sphere can be made to be warming up to spy through the non-contact heating method of the isolation cover
Determine the CO of temperature2Laser；
The temperature diagnostic module include can measure the thermally conductive sphere temperature Two-color Measure Thermometer and at the same survey
Measure the thermal infrared imager of tested solid particle or droplet surface two-dimensional temperature situation.
2. the measuring device according to claim 1 for thermal radiation property between fine solid particle or drop, feature
Be: the measuring device further includes atmosphere adjustment module, and the atmosphere adjustment module includes for adjusting in the isolation cover
The gas cylinder of atmosphere, the gas cylinder inside gas piping and isolation cover by being connected to.
3. the measuring device according to claim 1 for thermal radiation property between fine solid particle or drop, feature
Be: the measuring device further includes control module, and the control module includes the data collecting card and use for data acquisition
In the setting of each module parameter and the computer of start-up and shut-down control.
4. the measuring device according to claim 1 for thermal radiation property between fine solid particle or drop, feature
Be: the isolation cover is made of glass material, and covers at the whole body outside the ultrasound suspending device by sealing buckle and make it
It is closed.
5. the measuring device according to claim 4 for thermal radiation property between fine solid particle or drop, feature
It is: is equipped with admission line and outlet pipe at the top of the isolation cover, atmosphere in ultrasound suspending module can be switched over and be tieed up
It holds.
6. the measuring device according to claim 4 for thermal radiation property between fine solid particle or drop, feature
Be: the isolation cover leans to one side to be equipped with the germanite glass form for having good transmitance to the thermal infrared imager thermometric wavelength.
7. the measuring device according to claim 1 for thermal radiation property between fine solid particle or drop, feature
Be: the sound wave tranmitting frequency of the loudspeaker array is continuously adjusted within the scope of 0-100kHz.
8. the measuring device according to claim 1 for thermal radiation property between fine solid particle or drop, feature
Be: the thermally conductive sphere is made of the good conductor material of heat, a diameter of 1.5 μm of -2.5mm.
9. the measuring device according to claim 1 for thermal radiation property between fine solid particle or drop, feature
It is: the CO2The power of laser and light-emitting window direction are adjustable.
10. the measuring device according to claim 2 for thermal radiation property between fine solid particle or drop, feature
Be: the gas cylinder is additionally provided with flow control valve, and gaseous species can be switched by the flow control valve and adjust flow, realize
Atmosphere in the isolation cover is adjusted.
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| CN112730510A (en) * | 2020-12-24 | 2021-04-30 | 西安交通大学 | Liquid drop radiation heat exchange experimental device and method |
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| CN111413454A (en) * | 2020-04-20 | 2020-07-14 | 东南大学 | Testing device and testing method for ignition combustion of energetic material powder and nondestructive cooling of condensed phase combustion product |
| CN111413454B (en) * | 2020-04-20 | 2022-04-08 | 东南大学 | Testing device and testing method for ignition combustion of energetic material powder and nondestructive cooling of condensed phase combustion product |
| CN112730510A (en) * | 2020-12-24 | 2021-04-30 | 西安交通大学 | Liquid drop radiation heat exchange experimental device and method |
| CN112730510B (en) * | 2020-12-24 | 2022-02-22 | 西安交通大学 | Liquid drop radiation heat exchange experimental device and method |
| CN113391022A (en) * | 2021-06-18 | 2021-09-14 | 西北工业大学 | High-temperature high-pressure multi-atmosphere single-droplet combustion test device |
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